Estimation of the Yield of “Scission” Neutrons from Thermal Neutron-Induced Fission of {sup 239}Pu

Results of investigations of the angular and energy distributions of prompt neutrons from {sup 239}Pu fission observed on WWR-M type research reactor (Gatchina) are presented. Peculiarities observed in both angular and energy distributions of prompt neutrons can be explained by assuming the existenc...

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Bibliographic Details
Published in:Journal of experimental and theoretical physics 2018-10, Vol.127 (4)
Main Authors: Vorobyev, A. S., Shcherbakov, O. A., Gagarski, A. M., Petrov, G. A., Val’ski, G. V., Kuz’mina, T. E.
Format: Article
Language:English
Subjects:
ANISOTROPY
CENTER-OF-MASS SYSTEM
EMISSION
ENERGY SPECTRA
FISSION FRAGMENTS
NUCLEAR PHYSICS AND RADIATION PHYSICS
PLUTONIUM 239
PROMPT NEUTRONS
RESEARCH REACTORS
THERMAL NEUTRONS
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Summary:Results of investigations of the angular and energy distributions of prompt neutrons from {sup 239}Pu fission observed on WWR-M type research reactor (Gatchina) are presented. Peculiarities observed in both angular and energy distributions of prompt neutrons can be explained by assuming the existence of neutrons emitted near the instant of fissioning nucleus rupture. Anisotropy of the angular distribution of prompt neutrons in the frame of the center of mass of fission fragments (ψ(0°)/ψ(90°) ≈ 1.07–1.09) should also be taken into consideration.
ISSN:1063-7761
1090-6509
DOI:10.1134/S1063776118090224